<?php

function GetChildren($vals, &$i) 
{
    $children = array();         // Contains node data
    
    /* Node has CDATA before it's children */
    if (isset($vals[$i]['value'])) 
        $children['VALUE'] = $vals[$i]['value'];
    
    /* Loop through children */
    while (++$i < count($vals))
    {
        switch ($vals[$i]['type']) 
        {
            /* Node has CDATA after one of it's children 
                (Add to cdata found before if this is the case) */
            case 'cdata': 
                if (isset($children['VALUE']))
                    $children['VALUE'] .= $vals[$i]['value'];
                else
                    $children['VALUE'] = $vals[$i]['value'];
                break;
            /* At end of current branch */ 
            case 'complete': 
                if (isset($vals[$i]['attributes'])) {
                    $children[$vals[$i]['tag']][]['ATTRIBUTES'] = $vals[$i]['attributes'];
                    $index = count($children[$vals[$i]['tag']])-1;

                    if (isset($vals[$i]['value'])) 
                        $children[$vals[$i]['tag']][$index]['VALUE'] = $vals[$i]['value'];
                    else
                        $children[$vals[$i]['tag']][$index]['VALUE'] = '';
                } else {
                    if (isset($vals[$i]['value'])) 
                        $children[$vals[$i]['tag']][]['VALUE'] = $vals[$i]['value'];
                    else
                        $children[$vals[$i]['tag']][]['VALUE'] = '';
        }
                break;
            /* Node has more children */
            case 'open': 
                if (isset($vals[$i]['attributes'])) {
                    $children[$vals[$i]['tag']][]['ATTRIBUTES'] = $vals[$i]['attributes'];
                    $index = count($children[$vals[$i]['tag']])-1;
                    $children[$vals[$i]['tag']][$index] = array_merge($children[$vals[$i]['tag']][$index],GetChildren($vals, $i));
                } else {
                    $children[$vals[$i]['tag']][] = GetChildren($vals, $i);
                }
                break;
            /* End of node, return collected data */
            case 'close': 
                return $children;
        } 
    } 
} 

/* Function will attempt to open the xmlloc as a local file, on fail it will attempt to open it as a web link */
function GetXMLTreeProfile($xmlloc) 
{
    if (file_exists($xmlloc)) {
        $data = implode('', file($xmlloc));
    } else {
        $fp = fopen($xmlloc,'r');
        $data = fread($fp, 100000000);
        fclose($fp);
    }

    $data = preg_replace("/<knows>.*<\/knows>/is","",$data);
    
    $parser = xml_parser_create('UTF-8');
    xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 0);
    xml_parse_into_struct($parser, $data, $vals, $index);
    xml_parser_free($parser);
    $code = xml_get_error_code($parser);
    if ($code != XML_ERROR_NONE) {
        global $messages;
        $messages[] = __gettext("XML error: ") . xml_error_string($code);
    }
    
    $tree = array();
    $i = 0;
    
    if (isset($vals[$i]['attributes'])) {
        $tree[$vals[$i]['tag']][]['ATTRIBUTES'] = $vals[$i]['attributes'];
        $index = count($tree[$vals[$i]['tag']])-1;
        $tree[$vals[$i]['tag']][$index] =    array_merge($tree[$vals[$i]['tag']][$index], GetChildren($vals, $i));
    } else {
        $tree[$vals[$i]['tag']][] = GetChildren($vals, $i);
    }
    
    return $tree;
}

/* Function will attempt to open the xmlloc as a local file, on fail it will attempt to open it as a web link */
function GetXMLTree($xmlloc) 
{
    if (file_exists($xmlloc))
        $data = implode('', file($xmlloc));
    else {
        $fp = fopen($xmlloc,'r');
        $data = fread($fp, 100000000);
        fclose($fp);
    }

    $parser = xml_parser_create('UTF-8');
    xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 0);
    xml_parse_into_struct($parser, $data, $vals, $index);
    xml_parser_free($parser);

    $tree = array();
    $i = 0;
    
    if (isset($vals[$i]['attributes'])) {
    $tree[$vals[$i]['tag']][]['ATTRIBUTES'] = $vals[$i]['attributes'];
    $index = count($tree[$vals[$i]['tag']])-1;
    $tree[$vals[$i]['tag']][$index] =    array_merge($tree[$vals[$i]['tag']][$index], GetChildren($vals, $i));
    }
    else
        $tree[$vals[$i]['tag']][] = GetChildren($vals, $i);
    
    return $tree;
} 

?>